I have a 1972 Pearson 30. It was bought last Sept. 2013. When we pulled her out of the water for the first time, I live in Ohio, so she has to come out for the winter. I found that there was a 8 inch in diameter blemish in the rudder that the previous owner kept putting epoxy in for the last number of years. I believe that the rudder needs rebuilt. Does anyone have any information on these rudders, or where I can get the foam core. Any information that I can get would be helpful. D R Marine wants $1900 for a whole new rudder. Not going to happen. Please help.